com.esminis.server.library.dialog.pager.DialogPagerAdapter.java Source code

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Here is the source code for com.esminis.server.library.dialog.pager.DialogPagerAdapter.java

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/**
 * Copyright 2016 Tautvydas Andrikys
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.esminis.server.library.dialog.pager;

import android.util.SparseArray;
import android.view.View;
import android.view.ViewGroup;

import com.esminis.server.library.service.Utils;

abstract public class DialogPagerAdapter extends android.support.v4.view.PagerAdapter {

    private final SparseArray<DialogPagerPage> pages = new SparseArray<>();
    private Integer position = null;
    protected final DialogPager pager;

    protected DialogPagerAdapter(DialogPager pager) {
        this.pager = pager;
    }

    @Override
    abstract public int getCount();

    abstract public DialogPagerPage create(ViewGroup container, int position);

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return object instanceof DialogPagerPage && ((DialogPagerPage) object).getLayout() == view;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        final DialogPagerPage page = pages.get(position);
        if (page == object) {
            pages.remove(position);
            container.removeView(page.getLayout());
        }
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        final DialogPagerPage page = create(container, position);
        pages.put(position, page);
        return page;
    }

    @Override
    public void setPrimaryItem(ViewGroup container, int position, Object object) {
        if ((this.position == null || this.position != position) && object instanceof DialogPagerPage) {
            this.position = position;
            DialogPagerPage page = (DialogPagerPage) object;
            Utils.keyboardHide(pager);
            page.onStateChanged();
            page.onShow();
        }
    }

}